Moisture-proof paper package or carton.



H. FIUSCH, In. MOISTURE PROOF PAPER PACKAGE 0R CARTON.

APPLICATION FILED MAY 26. i910.

I Patent@ June 18; 191%.

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MQISTURlE-PRQF PAPER PACKAGE mit CTON.

Specification of Letterslltatent.

Patented d une lid, Maid...

application and may ae, une. serial no. teatro. A

To all whom it may concern .j

Be it known that l, HERMAN FIETSCH, Jr., a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Moisture-Proof Paper Packages or Cartons, of which the following is a description. 4

The invention relates to lfoldable, moisture-proof paper packages or cartons for marketing chemicals, soap powder, cereals, crackers and other goods which deteriorate either by losing or absorbing moisture on exposure to the atmosphere.

It is customary to coat the paper box board from which such cartons are made with paraffin wax ory other waterproofing material, but in such cases, the overlapping portions of the carton and the oldable flap or cover portions cannot be sealed tight since the coat oi waterproofing material prevents the adhesion of glue, paste or like cementingmaterial. lln the common form of collapsible carton made of a blank of stiii paperboard cut and scored to form the corners and foldable flaps, thev presence of a surface coat of Waterproofing material prevents the sealing of the overlapping seams and flaps. These overlapping `parts are usu- .ally held together by suita le tucks or tongues, but the carton is not thereby rendered moisture tight at such points. Moreover, any coat of Waterproof material will interfere if not entirely prevent the application of printed matter and of colors to the' surface of the carton, and, in order that the package may present an attractive appearalice, it is customary to inclose the carton in a supplemental, outer wrapper.

ln accordance with the present invention,

the paper package or carton is formed of a'- stid" paper box-board comprising layers 'of suitable paper stock united by an intermediate layer of oxidized petroleum residuum. This Waterproof material is usually formed by blasting petroleum residuum or tailings with air at high temperature. lt is applied in melted or fused condition between .the layers of paper stock which are then pressed together by passing the saine between rollers or in any other suitable manner. 'llhe paper beX-board thus made is then cut and scored to form the carton. rllrieoiiidized petroleum residuum forms a thin, pliant, waterproofing yture-prooil at all points. Vner surface 1s free from .of the collapsed'carton.

layer which lirmly unites the layers of paper stock, but does not penetrate the same to any appreciable extent, and the surfaceot the carton isfree to receive glue vorpaste at the overlapping parts to thereby completely in close the goods and render the package mois- Moreover, its inmaterial which might contaminate the contained goods. l

In the accompanying drawing which illustrates the form of carton to which the invention is more particularly directed, Figure 1 is a view of the blank from which the carton is formed. Fig. 2 is a perspective view Fig. 3 is a perspective view of the cart-on opened out to receive the charge. Fig. 4 is a perspective view of the completed package and Fig. 5 is a crosssection of the same.

'llhe sti-l paper box-board is formed of inner and outer layers of suitable paper stock. The outer box-board Manila orV other suitable paper pasted thereon. The inner layer f is formed of Manila or other suitable board. The

oxidized petroleum residuum, which forms a thin' intermediate layer d.

between the layers of paper stock, is applied.

in melted ory fused condition. and the whole is then subjected to pressure, preferably,` by passingthe same between rollers.

The resultant Waterproof board -is then 'y such, for-example, as shown This blank is scored on the lines f at one side edge of the blank is lapped over and glued tothe opposite side edge to form a tight'seam extending lengthwise oit the carton. The collapsed carton thus formed is shown in Figz. To ll the carton, it is opened out as shown in Fig; 3, and after the flaps e at one end have been folded upon one another and securely glued together, the ,goods are placed therein and the flaps at the opposite endare folded and glued together to Vform the finished package (see Fig. Il) and completely inclose the goods..

'llhe thickness Aoil .the layers of' paper stocks employed may vary in accordance with the desired thickness of the Walls ofthe carton. Illhe waterprooingslayer d of oxidized pepaper or of. paper boir-v layer preferably comprises paper a havingan outer surfacing b oft' v iet troleum residuum need only be a few thousandths ofv an inch in thickness. yllhis substance melts at the high temperature of about 210O` to 240 Fahrenheit and the Waterproof layer d Will not therefore tend to liquefy and run` or exude from between the layers of paper stock under the influence of heat to which the packages may be exposed. lt has no' oensive odor such as might contaminate the inclosed goods. Moreover, While the WaterproofingA layer al of thisV material.

firmly unites the layers of paper stock, it does not penetrate the same. The surface of the carton is thus free to receive glue or other suitable cement at the side seam fand at the foldable flap portions e, and the package is moisture-proof, not only in its body portion, but at the overlapping parts as Well to eectively protect the inclosed goods. The surface of the carton is also free to receive ink and coloring material and may be printed upon and decorated in any desired manner. Moreover, inasmuch as the package is moisture-proof at all points, it can be used for goods containing a large amount of moisture, or for deliquescent material, and the printed and decorating matter on its surface Will remain intact and Will not become discolored or disfigured.

The layer d of this .Waterproof material -is tough and pliant and is not ruptured by the scoring and bending of the stiif paper box-board at the corners of the carton, and these qualities are retained under the Wide mesme ranges of temperature to which the packages may be exposed.

lt is obvious that the details of construction set forth may be varied Without departurefron'i the essentials of the invention as defined in the claims.

l claim as my invention zl A collapsible, moisture proof carton comprising side Walls and foldable end flaps, said side Walls being connected to one another and to said end iaps by corner folds and said Walls and flaps being formed of layers of paper stock, and an intermediate, thin, pliant layer of a waterproof fused cement uniting the layers of paper stock and extending Without interruption through said corner folds, substantially as described.

2. A collapsible, moisture proof carton comprising side Walls and foldable end flaps, said side Walls being connected together and to said end iaps 'by integral corner folds and said Walls. and flaps being formed of layers of paper stock and an intermediate, thin, pliant layer of a yfused. cement uniting but not penetrating the layers of paper stock and extending throughout said side Walls and said foldable end flaps and Without interruption through said connecting corner folds, substantially as described.

HERMAN Fmfrson, Jn.

Witnesses:

O'r'rrnm C. FREIBERG, KATHARINE GERLACH. 

